11a. Receptacle for matches, a hat or a selection of chocolates, shrub used for topiary and knot gardens, an old square pew, or a short word for a railway signallers cabin. (3)
15a. Relation of lime and bergamot, or, a word for something defective that derives from the aforesaid citrus being the lowest value symbol on some fruit machines. (5)
35a. Electromagnetic radiations made of photons; bright part of a picture as opposed to shade, or knowledge. (5)
55a. Retail building such as a boutique, bakery, haberdashery or a village store, originally a booth or a market stall. (4)